CVE-2018-16228: apple mac_os_x Out-of-bounds Read
CVSS: 9.8v3.1CriticalModified
AliasesALPINE-CVE-2018-16228UBUNTU-CVE-2018-16228DEBIAN-CVE-2018-16228
Published 03-10-2019Last modified 03-12-2025
Vulnerability summary
CVE-2018-16228 is a critical (CVSS 9.8) Out-of-bounds Read vulnerability in apple mac_os_x. EPSS estimates a 3.74% chance of exploitation in the next 30 days, higher than 89.7% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
3.74%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 11 · Related 7Timeline
- 03-10-2019PublishedVulnerability first disclosed.
- 03-12-2025Last modifiedVulnerability information updated.
Description
The HNCP parser in tcpdump before 4.9.3 has a buffer over-read in print-hncp.c:print_prefix().
CVSS metrics
6 scores · 5 sources · 2 versionsCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSources5 sources · 7.5–9.8
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
3.74%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
0.00 pp
From 3.74% on 18-09-2026
18-09-202618-10-2026
EPSS score3.74%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- tcpdump< 4.9.3-1
- debian_linuxEOL8.0 | 9.0 | 10.0
Alpine1 product
- tcpdump< 4.9.3-r0
Apple1 product
- mac_os_x< 10.15.2
Fedoraproject1 product
- fedoraEOL29 | 30 | 31
Opensuse1 product
- leapEOL15.0 | 15.1
Redhat1 product
- enterprise_linuxEOL7.0 | 8.0
Tcpdump1 product
- tcpdump< 4.9.3
Ubuntu1 product
- tcpdump< 4.9.3-0ubuntu0.14.04.1+esm1 | < 4.9.3-0ubuntu0.16.04.1 | < 4.9.3-0ubuntu0.18.04.1
8 vendors · 9 products
References
23 links- github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGESX Refsource MISCRelease NotesThird Party Advisory
- github.com/the-tcpdump-group/tcpdump/commit/83a412a5275cac973c5841eca3511c766bed778dX Refsource CONFIRMPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2019/10/msg00015.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.opensuse.org/opensuse-security-announce/2019-10/msg00050.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00053.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
Show all 23 references
- security.netapp.com/advisory/ntap-20200120-0001/X Refsource CONFIRM